One bond trader says he's been slipping out early to watch his kids play sports. A fund manager says his office just staged a golf retreat. A trading supervisor at another bank confides he's swiping through a lot of profiles on Tinder, the dating app. Welcome back, Wall Street, to the doldrums. After four straight quarters of rising income from trading, the biggest U.S. investment banks spent the past few months in a renewed slump. Shareholders will soon see how dull it's been. Analysts estimate the five largest firms will say their combined revenue from trading dropped 11 percent from a year earlier to $18.4 billion — the smallest haul for a second quarter since 2012. The banks start posting results July 14. Behind the scenes, traders grouse about a lack of market- moving news. Congressional gridlock is eroding optimism that President Donald Trump can enact a sweeping, pro-business agenda. Other geopolitical frictions have yet to jolt markets. The Federal Reserve is sticking to its interest-rate path. Among the hardest hit are fixed-income traders. Combined, the five firms are likely to say revenue from that business fell 16 percent to $11.2 billion, according to estimates gathered from nine analysts. At Goldman Sachs Group Inc., it probably tumbled 23 percent to about $1.5 billion, the estimates show. At JP Morgan Chase & Co., it likely fell 17 percent to $3.3 billion. In equities trading, analysts estimate total revenue slipped 2 percent to $7.2 billion. Stock-trading leader Morgan Stanley may post the sharpest decline, about 6 percent. Spokesmen for the five banks declined to comment.